【摘要】 目的:比较不同饲养方式对鸡蛋品质的影响,为蛋鸡产业化生产提供指导。方法:以如皋黄鸡为试验素材,采用笼养和平养两种饲养方式,测定不同产蛋阶段常规蛋品质、营养成分和矿物元素含量。结果:产蛋初期,平养条件下蛋黄色泽、脂肪和胆固醇含量极显著高于笼养(P<0.01),铜和铁含量显著低于笼养(P<0.05)。产蛋中期,平养条件下蛋壳强度、蛋黄重量、蛋黄比率、蛋黄蛋白比均显著低于笼养(P<0.05);哈氏单位以及蛋白质、维生素E和氨基酸含量均显著高于笼养(P<0.05);蛋黄色泽、维生素A和胆固醇含量均极显著高于笼养(P<0.01),锰含量极显著低于笼养(P<0.01)。产蛋后期,平养条件下胆固醇含量极显著高于笼养(P<0.01);蛋白质、维生素A和铜含量显著高于笼养(P<0.05);锰含量极显著低于笼养(P<0.01);硒含量显著低于笼养(P<0.05)。结论:不同产蛋阶段,饲养方式对鸡蛋品质均有一定的影响。更多还原

【Abstract】 【Objective】To study the effect of raising manner on the egg quality of rugao-yellow chicken to provide guidance for layer industrialization production.【Method】Rugao-yellow chicken were reared at flat and cage,and the general egg quality,the contents of nutritional ingredient and mineral element were measured.【Result】At initial stage of laying,the egg color,fat and cholesterol contents of flat pension were extremely higher than reared in cages(P<0.01).Cu and Fe contents were lower than reared in cages(P<0.05).At middle-laying,the eggshell strength,yolk weight,yolk ratio and yolk protein ratio of flat pension were lower than reared in cages(P<0.05).Haugh Unit,protein,VE and amino acid contents were higher than reared in cages(P<0.05).Rolk color,VA and cholesterol contents were extremely higher than reared in cages(P<0.01).Mn content was extremely lower than reared in cages(P<0.01).At late period of laying,the cholesterol content of flat pension was extremely higher than reared in cages(P<0.01),the protein,VA and Cu contents were higher than reared in cages(P<0.05),the Mn content was extremely lower than reared in cages(P<0.01),and the Se content was lower than reared in cages(P<0.05).【Conclusion】During different laying stages,rearing manners played certain influence on the egg qualities.更多还原